Stumbled across an op-ed on CNN that mentioned the ICC. It's as how you would expect...
https://www.cnn.com/2021/03/22/perspectives/infrastructure-road-projects-cities/index.html
I love this part. Good luck

The quickest, easiest and most powerful way for Buttigieg to fulfill his promise to "rebuild our nation's infrastructure into something that creates opportunities for all, especially those who have been historically shut out" is to declare the interstate system complete, permanently ending all planning for these final segments and freeing Allendale and poor neighborhoods like it from this funding-induced tyranny.
It's not within the parvenu of the Secretary of Transportation to unilaterally "declare the Interstate System complete" when there are congressionally-enacted corridors yet to be constructed dating back to 1991; each one of those, with its own authorizing language, would have to be rescinded one at a time -- and the chances of that happening are slim & none (and slim's left the building!). As I've iterated before on more than one occasion, these corridors are in and of themselves both political animals and often political detritus. Now -- a moratorium on building new freeway mileage within urban areas would be somewhat politically feasible (many of the areas affected have already either enacted measures to that effect or have, in a
de facto sense, simply chosen not to entertain new-terrain freeway mileage -- even the poster child for the freeway, L.A., fits into this category). But outlying areas beyond the reach of any reasonable transit network still require safe & efficient roads to handle both interregional travel and commercial transport. The rail network, in private hands, is increasingly geared toward long-distance and "bulk" movements, essentially leaving short and mid-distance hauls to trucks (and often employing "hub & spoke" networks to effect any intermodal transfers); as that system is configured today, any suggestion to simply move freight to rail is disingenuous at best.
Also, this current administration, given their precarious levels of support in the rural sectors, will probably attempt to pick their battles to those areas where they have a reasonable chance or success. In the transportation sector, that will likely mean concentrating any push for modal change away from roads & automobiles within the urban areas that provided them with their electoral support last year. For better or worse, that will mean that items such as the Shreveport connector (or maybe even the Lafayette crosstown project) may not find much support from USDOT, but longer-distance and rural-based projects like I-11 or the P2P, which have the blessing (if not the funding) from the relevant states may be given something of a grudging "green light"; doing otherwise would draw political flack from not only the usual
R suspects but members of the administration's party who have been championing these corridors for a quarter-century or more.